This is a common move for leaders of big tech companies. Apple’s Steve Jobs, Oracle’s Larry Ellison, Tesla’s Elon Musk and Google’s Larry Page, Sergey Brin and Eric Schmidt have all operated under such plans. The idea is that as CEO their job is to increase shareholder value so their payouts should be tied to stock performance, not a base salary.

Zuckerberg reportedly still owns 426.3 million Facebook shares, valued at $25.7 billion. As of Tuesday the company had a market cap of $157.02 billion.

According to Bloomberg, Zuckerberg is the 22nd richest person in the world.

Facebook COO Sheryl Sandberg earned a salary of $384,423 in 2013 and received $15,158,758 in stock awards.